(At Cartoon Network Universe we see a Japanese temple)

???? (narrator): Long ago, in a distant land, I, Aku, the shapeshifting master of darkness, unleashed an unspeakable evil.

(Then we see Samurai Jack fighting Aku)

Aku (narrator): But... A foolish samurai warrior, wielding a magic sword, stepped forth to oppose me.

(Then we see Aku defeated)

Aku (narrator): Thanks to the ungratefulness of my daughter Ashi, I was defeated and eventually banished for all eternity... At least until a gorilla and a witch managed to free me from my banishment.

(Aku is seen at the temple alongside Salem and Grodd)

Aku: Let me see if I heard this right. You are forming some kind of alliance?

Grodd: Yes. And together, we are going to conquer each universe. Our rule will be law.

(Aku smirks)

Aku: This sounds interesting. Wait a second.

(Aku opens a portal, allowing the Cartoon Network Villains to escape the null void)

Vilgax: Ah... Finally free...

HIM: What now?

Aku: I freed you from your banishment.

(Then the villains kneel before Aku)

Grodd: You got great allies, Aku. We are one step closer to form our society.

Salem: We will bring anyone who opposes us to their knees.

Aku: And this includes the fools who made us suffer.

(Unbeknownst to them, Samurai Jack somehow noticed Aku's return)

Samurai Jack: I gotta warn them.

(Samurai Jack runs towards Cartoon Network HQ)

(Meanwhile in Remnant, Ozpin and Glynda are seen discussing about something important)

Glynda: Superman and his Regime have been neutralized. But I have a bad feeling about something, and I don't know what it is.

Ozpin: Roman and his colleagues escaped. And it looks like Salem is planning something really evil.

Glynda: Yeah. This too.

Ozpin: Should we warn our students?

Glynda: Not for now. At least until we find out what are Salem's current plan.

(At Menagerie, Kevin is seen exercising as Team SSSN watches them)

Star: Wow... Look at these muscles.

Sage: How exciting...

Scarla: Yeah. I really want a piece of him.

Neptunia: Who doesn't?

(Then Gina and Kali come closer to Kevin)

Gina: Kevin. Could you come with us?

Kevin: Sure. Something important?

Kali: You will find out, sweetie.

(Then Kevin goes alongside Kali and Gina)

(Back to Cartoon Network Universe, Samurai Jack arrives at the Headquarters and finds Ben 10)

Samurai Jack: Ben. You will not believe this. But my old archenemy Aku somehow escaped from his banishment.

(Then Ashi, Gwen and Charmcaster come in)

Ashi: What? My father escaped?

Samurai Jack: Yes. And he freed our worst enemies from the Null Void.

Charmcaster: Damn it...

Gwen: Did you see anyone else besides them?

Samurai Jack: A talking gorilla and some kind of evil witch. I guess it was her who freed Aku...

Ashi: Since my father couldn't escape from his banishment as his magics were useless.

Ben 10: We must warn the others.

(Cut to Injustice Universe, Batman gathers the insurgents, including Mary Marvel, Zatanna, Star Sapphire, Spoiler, Powergirl, Black Canary and the alternate Green Arrow)

Deathstroke: I got some data about Grodd's current plan.

Harley Quinn: And it looks like he is gathering a group of fools and forming some kind of society.

Mary Marvel: And it looks like he got allies from other universes.

Powergirl: We must warn the others about the crisis.

(Grodd's plan is in progress. What are his true intentions?)

(To be continued)